Improvement effect of high energy dynamic compaction under complicated geological conditions
NIAN Tingkai 1, LI Hongjiang 2, YANG Qing 1, CHEN Yunjin 3, WANG Yuli 4
1.Branch of Geotechnical Engineering State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116024 China 2.China Zhonghua Geotechnical Engineering Co. Ltd. Beijing 102600 China 3.China Communications Planning Design Institute for Water Transportation Beijing 100007 China 4.Investigation Institute of Hydrogeology and Engineering Geology of Liaoning Province Dalian 116037 China
Abstract：A series of experiments of high energy dynamic compaction(HEDC) with 8000,10000,15000 kN·m are conducted on rubble fill sites underlain by thin soft clay layers in coastal areas and in mountain valleys,respectively.The results of cone dynamic penetration test(DPT) and plate loading test(PLT) for several sites are systematically analyzed and compared with those before HEDC.Some conclusions concerning the effective depth of improvement(EDI) on the rubble fill sites in mountain valleys or those underlain by thin soft layers in coastal areas under various HEDC are drawn.It is recommended that the EDI should be pre-estimated by the revised Menard Formulation,with the revised coefficient within 0.29～0.40.Especially,the low value should be used under the condition of the thin soft strata and shallow groundwater levels.
年廷凯；李鸿江；杨庆；陈允进；王玉立；. 不同土质条件下高能级强夯加固效果测试与对比分析[J]. 岩土工程学报, 2009, 31(1): 139-144.
NIAN Tingkai 1, LI Hongjiang 2, YANG Qing 1, CHEN Yunjin 3, WANG Yuli 4. Improvement effect of high energy dynamic compaction under complicated geological conditions. Chinese J. Geot. Eng., 2009, 31(1): 139-144.
